Best Investment Apps in the UK 2026: How They Compare on Fees, Features & Experience

Best Investment Apps in the UK 2026: How They Compare on Fees, Features & Experience

Choosing an investment app in the UK used to be simple because only a few big legacy brokers dominated the market. Today, UK investors can choose between zero-commission trading apps, low-cost ETF portfolio builders, robo-advisors, and full-service financial supermarkets.

While having options is great, it also creates confusion. App store ratings rarely tell you the whole story. A platform with a sleek interface might hide heavy foreign exchange charges, while a traditional platform with higher headline fees might actually save you money if you hold a large portfolio in mutual funds or individual shares.

To help you find the right fit for your money, this guide compares the leading UK investing platforms across five key areas: Trading 212, InvestEngine, Hargreaves Lansdown, AJ Bell (and its stripped-back app Dodl), Freetrade, Interactive Investor, and Vanguard UK.

How We Compared These Platforms

Evaluating investment apps requires looking beyond surface-level aesthetics. An app can be visually impressive, but if it lacks crucial account types like a Self-Invested Personal Pension (SIPP) or charges high hidden fees on foreign exchange, it might not suit your long-term wealth strategy.

To build a fair comparison, we evaluated each platform against five core criteria:

1. Total Cost of Ownership: We looked at account administration fees, trade execution charges, foreign exchange (FX) conversion fees, deposit/withdrawal costs, and mandatory fund management charges (OCF). We tested these costs across small portfolios (£1,000 to £10,000) and larger portfolios (£50,000+) to see where percentage fees outgrow flat monthly charges.
2. Investment Availability: We mapped out what you can actually buy on each app, including single stocks, exchange-traded funds (ETFs), open-ended investment companies (OEICs/mutual funds), corporate and government bonds, and fractional shares.
3. Tax-Efficient Accounts: We checked for key UK tax wrappers, including Stocks and Shares ISAs, Junior ISAs (JISAs), Lifetime ISAs (LISAs), General Investment Accounts (GIAs), and SIPPs.
4. App Usability and Tooling: We tested mobile interface design, execution speed, research quality, automated recurring investments, dividend handling, and portfolio rebalancing features.
5. Security and Regulatory Protection: Every provider reviewed is authorized and regulated by the Financial Conduct Authority (FCA) and covered by the Financial Services Compensation Scheme (FSCS) up to £85,000 per person per platform for eligible claims.

Fee Structures Explained

Fees directly reduce your compound growth over time, so understanding how each platform charges you is essential. UK investment apps broadly fall into three fee models: zero-commission models, percentage-based platform fees, and flat monthly subscription fees.

1. Zero-Commission & Low-Cost App Providers

Platforms like Trading 212 and InvestEngine have disrupted the market by eliminating account platform fees and trade commissions.

• Trading 212: Charges 0% platform fees for both its Stocks and Shares ISA and General Investment Account. There are no trading commissions on UK or international stocks and ETFs. Its primary cost comes from a foreign exchange fee of 0.15% when buying assets in a currency other than Sterling. Card deposits are free up to £2,000, after which a 0.70% fee applies, though bank transfer deposits remain completely free.
• InvestEngine: Focuses strictly on Exchange Traded Funds (ETFs). Its DIY portfolio option charges 0% account fees and 0% dealing fees. If you opt for their Managed Portfolio service, they charge a low 0.25% annual management fee. Because ETFs trade in local currencies or Sterling-denominated tickers on the London Stock Exchange, FX costs on InvestEngine are generally minimal or non-existent for standard UK listings.

2. Percentage-Based Traditional Brokers

Established platforms often charge a percentage based on the total value of your holdings, capped or scaled down as your portfolio grows.

• Hargreaves Lansdown (HL): Charges an annual platform fee of 0.45% on fund investments up to £250,000. For shares, ETFs, and trusts held inside an ISA, the 0.45% fee is capped at £45 per year. HL offers commission-free fund trading, but individual share and ETF trades carry a £11.95 dealing fee, which drops if you trade frequently. However, HL waives dealing fees for regular monthly direct debit investments.
• AJ Bell: Charges a lower annual platform fee of 0.25% on funds and shares (with the share fee capped at £42 a year inside an ISA). Shares and ETF trades cost £5.00 per trade, while fund trades cost £1.50. Their secondary app, Dodl, simplifies this further with a flat 0.15% annual fee (minimum £1 per month) and zero trading fees, making it an affordable gateway to AJ Bell's infrastructure.
• Vanguard Investor UK: Charges a flat 0.15% platform fee capped at £375 per year for portfolios over £250,000. It offers zero dealing fees on its mutual funds and ETFs, though you are strictly limited to Vanguard's own fund lineup.

3. Subscription & Flat-Fee Platforms

For larger portfolios, percentage fees can become expensive. That is where flat-rate subscription models shine.

• Interactive Investor (ii): Uses a tiered monthly plan starting at £5.99 per month for portfolios up to £50,000. Their £11.99 per month plan covers larger portfolios and includes a free monthly trade credit alongside lower international dealing charges. Standard UK share and fund trades cost £3.99. Once your portfolio passes roughly £30,000 to £50,000, paying a flat monthly fee can save hundreds of pounds annually compared to a 0.25% or 0.45% percentage fee.
• Freetrade: Operates on a subscription plan model. Their Basic plan is free for a General Investment Account, but accessing a Stocks and Shares ISA costs £5.99 a month (or £4.99 per month billed annually). The top-tier plan costs £11.99 per month and includes SIPP access, 3.5% interest on uninvested cash up to £3,000, and lower foreign exchange fees (0.39% compared to the standard 0.99%).

Investment Range & Account Types

The assets you want to hold and the accounts you need will quickly narrow down your options.

Stocks, Fractional Shares, and ETFs

If you want to purchase single company shares like Apple, Shell, or Barclays, Trading 212, Freetrade, AJ Bell, and Hargreaves Lansdown are top choices.

Trading 212 and Freetrade offer fractional shares, allowing you to buy a slice of high-priced stock starting from as little as £1. This makes portfolio diversification accessible even with modest capital.

Conversely, InvestEngine restricts its offering entirely to ETFs. While you cannot buy single equities like Tesla or Nvidia on InvestEngine, you get access to over 600 index-tracking funds covering global stock indices, bonds, commodities, and industry sectors with zero platform overhead.

Mutual Funds and Open-Ended Funds

For investors who prefer actively managed funds or traditional index trackers from managers like Fundsmith, Vanguard, or Fidelity, active brokers like Hargreaves Lansdown, AJ Bell, and Interactive Investor remain essential. App-only challengers like Trading 212 and Freetrade do not offer mutual funds (OEICs).

Account Types and Retirement Planning

Tax efficiency is critical for long-term growth in the UK.

• Stocks and Shares ISA: Allows you to invest up to £20,000 per tax year without paying capital gains tax or income tax on returns. Every platform in our list offers an ISA except for a few niche trading tools.
• Self-Invested Personal Pension (SIPP): Lets you save for retirement with government tax relief added to your contributions. Hargreaves Lansdown, AJ Bell, Interactive Investor, and Freetrade offer full SIPP functionality. Trading 212 does not currently offer a pension wrapper.
• Lifetime ISA (LISA): Provides a 25% government bonus (up to £1,000 per year) on savings up to £4,000 per tax year for first-time buyers under 40 or retirement. AJ Bell, Dodl, and Hargreaves Lansdown are among the few main apps supporting LISAs.

Mobile Experience & Engagement Features

An investment app needs to strike a balance between clear user design and reliable market tools. A cluttered screen can lead to costly trading mistakes, while a interface that oversimplifies market data might hide critical details like dividend dates or order types.

Automation and Smart Portfolio Building

Trading 212 leads in automation features with its "Pies & Auto-Invest" functionality. Users can build custom portfolios containing dozens of stocks and ETFs, allocate percentage weightings to each asset, and set up a automated direct debit. Incoming deposits are automatically distributed across the portfolio according to your chosen percentages. It also features a target-rebalancing button that re-aligns your investments with a single tap.

InvestEngine delivers an equally impressive feature set for ETF investors. Its "LookThrough" tool lets you see through your ETF holdings to analyze your true underlying exposure to specific companies, sectors, and geographic regions. InvestEngine also offers auto-rebalancing and automated monthly savings plans.

Trading Tools and Order Types

For active investors, Trading 212 provides technical charting via TradingView integration, alongside advanced order types including limit orders, stop-loss orders, and trailing stops.

Traditional platforms like Hargreaves Lansdown and AJ Bell place less emphasis on fast-paced trading mechanics and focus instead on depth of research. Their apps provide complete fund manager breakdown reports, morning market briefings, video insights, and direct access to company announcements.

Uninvested Cash Interest

With interest rates remaining a focus for savers, several investment apps now pay competitive interest on uninvested cash held within your trading account.

• Trading 212 pays high variable interest rates on uninvested cash held inside its ISA and GIA accounts, calculated daily and paid monthly.
• Freetrade pays 3.5% AER on uninvested cash up to £3,000, but only for subscribers on its £11.99/month top tier.
• AJ Bell and Dodl also pass on competitive variable interest rates on uninvested cash balances.

Who Each Platform Suits Best

No single investment app is perfect for every investor. The ideal choice depends on your portfolio size, how often you buy assets, and whether you prefer individual stocks, passive index funds, or managed investments.

1. Trading 212: Best overall for active stock buyers and fee-conscious beginners

If your priority is keeping costs as low as possible while accumulating individual stocks or ETFs inside a Stocks and Shares ISA, Trading 212 is hard to beat. The complete absence of platform fees, combined with an industry-low 0.15% FX charge, makes it the most cost-effective option for regular stock buyers.

• Strengths: 0% platform and trade fees, clean mobile interface, fractional shares, automated portfolio pies.
• Drawbacks: No SIPP options, no mutual funds, no LISA.

2. InvestEngine: Best for passive index fund investors building ETF wealth

If you follow a classic Boglehead or passive index investing strategy using ETFs like the Vanguard FTSE All-World or S&P 500, InvestEngine is an outstanding dedicated tool. It eliminates platform fees entirely for DIY portfolios and provides automated tools to build a globally diversified portfolio.

• Strengths: Zero platform and dealing charges for DIY ETF portfolios, automated monthly savings plans, deep asset transparency.
• Drawbacks: ETF investments only; no individual shares, mutual funds, or bonds.

3. Hargreaves Lansdown: Best for extensive asset choice and customer support

Hargreaves Lansdown remains the gold standard for UK investors who want access to every financial market alongside top-tier research, commentary, and responsive UK customer support. While its 0.45% fee on funds and £11.99 share dealing charges are higher than app-native competitors, its platform fee on shares is capped at £45 per year inside an ISA, making it surprisingly competitive for stock-heavy portfolios.

• Strengths: Unmatched investment selection, excellent research tools, full suite of wrappers (ISA, SIPP, LISA, JISA), capped ISA fee on equities.
• Drawbacks: Higher platform fee on mutual funds (0.45%), £11.95 share dealing fee for one-off trades.

4. Interactive Investor (ii): Best for portfolios over £50,000 and pension planning

For investors who have built up significant wealth, percentage fees become a drag on returns. Interactive Investor's flat subscription pricing model (£5.99 to £11.99 per month) ensures that as your ISA or SIPP grows to £100,000 or £500,000, your platform costs stay exactly the same.

• Strengths: Predictable flat-rate pricing, vast global investment choice, robust SIPP offering, free monthly trades on higher plans.
• Drawbacks: Expensive for small portfolios under £20,000.

5. Dodl by AJ Bell: Best for simple, guided investing with low percentage charges

Dodl acts as a bridge between simplified fintech apps and traditional wealth management. Backed by AJ Bell, Dodl offers a curated menu of funds, shares, and themed portfolios with an accessible 0.15% platform fee. It is also one of the cheapest places to hold a Lifetime ISA (LISA) for first-time homebuyers.

• Strengths: Very low 0.15% annual fee, beginner-friendly interface, supports ISAs, LISAs, and SIPPs.
• Drawbacks: Restricted stock and fund list compared to full-service AJ Bell.

Making Your Decision

The right investment app comes down to matching your personal strategy with the fee structure that keeps the most money in your pocket.

If your goal is to set up a monthly direct debit into low-cost index ETFs, InvestEngine or Trading 212 offer unbeatable value with zero account overhead. If you are building a long-term retirement fund inside a SIPP or require comprehensive research tools, established platforms like Hargreaves Lansdown, AJ Bell, or Interactive Investor provide the extra security, asset range, and account types required to manage your complete wealth strategy.

Before opening an account, audit your existing investments, calculate your expected foreign exchange volume, and select the tax wrapper that best protects your gains from tax.