Affiliate disclosure: Pennywise Finance may earn a commission if you sign up to a product through some of the links on this page. This has no effect on the rankings — products are ranked by user benefit only. See our full affiliate disclosure and review methodology.
Last reviewed: May 2026
Updated for the 2026/27 UK tax year.
Investment warning: The value of investments can fall as well as rise. You may get back less than you put in. Past performance is not a reliable guide to future returns. Investing apps are not suitable for money you might need within 5 years.
PF
Pennywise Finance Editorial
UK personal finance team — researchers and editors covering savings, ISAs, investing, mortgages and credit.
Fact-checked
Reviewed May 2026
Advertisement

The quick answer

If you do not want to read the full comparison, here is where each pick wins.

Best beginner mobile

Provider A

Beginner-friendly investing app. Simple mobile-first onboarding.

See Provider A →

Best for fractional shares

Provider B

Fractional shares app. Buy fractional shares from £1.

See Provider B →

Best micro-investing

Provider C

Round-up and recurring investing. Automatic round-ups from spending.

See Provider C →

Best for global markets

Provider D

Global markets and US shares. US, EU and Asian market access.

See Provider D →

Full comparison

Live pricing and provider links populate once partnerships are approved.

ProviderPricingWhat's goodWatch forAction
Provider ABeginner-friendly investing appBest beginner mobile — %Platform fee, populated on approval
  • Simple mobile-first onboarding
  • Pre-built portfolios
  • Educational content built in
  • Limited DIY fund choice
  • Sometimes higher platform fees
See app →Provider link added once approved.
Provider BFractional shares appBest for fractional shares — %Commission-free, populated on approval
  • Buy fractional shares from £1
  • Commission-free dealing
  • ISA + general account
  • FX fees on non-GBP shares
  • Variable interest spread on uninvested cash
See app →Provider link added once approved.
Provider CRound-up and recurring investingBest micro-investing — %Subscription + fund fees
  • Automatic round-ups from spending
  • Recurring weekly or monthly investing
  • Low minimum starting amount
  • Subscription fee on top of fund fees
  • Limited fund range
See app →Provider link added once approved.
Provider DGlobal markets and US sharesBest for global markets — %Platform fee, populated on approval
  • US, EU and Asian market access
  • Low FX fees on non-GBP shares
  • Advanced order types
  • More complex UI for beginners
  • Requires investment knowledge
See app →Provider link added once approved.
Advertisement

Investing apps vs full investment platforms

The distinction matters. Investing apps are mobile-first, designed for accessibility, often commission-free, and skew toward newer or smaller investors. Full investment platforms (Hargreaves Lansdown, Interactive Investor, AJ Bell) offer broader fund ranges, SIPPs, telephone support, and deeper research tools.

If you are starting out, an app is often the right entry point. As your portfolio grows past £25–£50k or you need a SIPP, a full platform may serve you better. See our Best Stocks & Shares ISAs UK 2026/27 for the platform-focused view.

What investing apps charge

Four cost categories to compare across UK investing apps:

Mobile-first risks

Investing apps are designed to remove friction. Friction-removal is good for getting started. It's a problem when the friction was protecting you from a bad decision.

FSCS protection

UK investing apps authorised by the FCA give you £85,000 of FSCS protection per person per platform — but only against platform failure, not investment losses. If the app collapses, your holdings would be transferred to a replacement broker. If the investments themselves fall in value, FSCS does not compensate you.

Our methodology

We rank UK investing apps using the same five-criterion framework: total cost of ownership, product range, standout features (fractional shares, round-ups, market access), app experience, and regulatory protection.

We do not accept payment to feature a product. Our affiliate relationships have no effect on rankings. Full detail: our review methodology.


Frequently asked questions

Are UK investing apps safe?

Yes, if they're FCA-authorised. UK-regulated investing apps are required to ring-fence client assets and give £85,000 of FSCS protection per person per platform against platform failure. None of this protects against the investments themselves falling in value.

Can I open an ISA on an investing app?

Most mainstream UK investing apps offer a Stocks & Shares ISA. The £20,000 annual allowance applies the same way as on a full investment platform. Some apps also offer a general (taxable) account for money beyond the ISA.

What are fractional shares?

Fractional shares let you buy a slice of a single share — e.g. £25 of Amazon stock rather than the full share price. Useful for diversifying small amounts across higher-priced shares. Not all UK apps support them.

What are round-ups?

Automatic micro-investing: every transaction on a linked debit card rounds up to the nearest pound, and the spare change gets invested. A £3.40 coffee triggers a £0.60 investment.

Are investing apps suitable for retirement saving?

For an ISA, yes — your annual £20,000 allowance can sit in an investing app. For a pension (SIPP), most app-only providers don't offer one. AJ Bell, Hargreaves Lansdown and Vanguard are usual SIPP options.

What's the minimum amount to start investing?

Most UK investing apps accept £1 minimum for fractional shares or recurring contributions. Practically, £25–£50 a month is enough to start building a habit.

Recommended next
Keep going

Related calculators and guides

This is general information, not financial advice. Pennywise Finance is not authorised by the Financial Conduct Authority. The value of investments can fall as well as rise; you may get back less than you put in. For decisions involving large sums or complex situations, consult an FCA-authorised adviser or the free MoneyHelper service.