Comparison

Honest Mobile vs OneCalc Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Honest Mobile

This app offers straightforward, ethical SIM plans with excellent UK and global coverage. Choose from plans with instant setup alongside your main SIM or essential everyday options featuring fast 5G and monthly billing. Enjoy free roaming and support from real, friendly humans.

Highlights
  • Unbeatable UK signal on major networks
  • Free global roaming in 180+ countries
  • Instant setup alongside main SIM
  • UK's fastest 5G
  • Monthly bill that drops
  • Friendly human customer support
Features
Read full description

Honest is the network doing mobile right, by you and the planet. Unlike the big networks, we actually care about the same things you do. So you get straightforward, ethical and innovative SIM plans that don’t cost the earth (figuratively and literally). Smart SIM The ultimate second SIM: • Unbeatable UK signal on EE, O2, Three and Vodafone • Free global roaming in 180+ countries • Instant set up alongside your main SIM Classic SIM Your essential everyday SIM: • UK’s fastest 5G • A bill that drops every month • Free EU roaming (first 5 days of every trip) All backed by a team of real, friendly humans you can speak to in seconds. Ready for a bold new standard of mobile? Join the UK’s top-rated B Corp mobile network today.

About

OneCalc Pro

Features
Read full description

One calm, capable calculator that replaces a dozen apps cluttering your Home Screen. OneCalc brings together everyday maths, scientific functions, currency and unit conversion, and a genuinely useful pay tracker — all in one beautifully simple app, with no ads, no accounts, and no data leaving your device. Standard and scientific calculator Switch instantly between a clean everyday calculator and full scientific functions, with a scrollable history so you never lose a previous sum. Pay and overtime tracker Built for shift workers. Add jobs and pay rates, set night and weekend multipliers, and watch your earnings update live as you work. No spreadsheets, no guesswork. Scan and Solve Point your camera at a maths problem — textbook, worksheet, whiteboard — and get a clear, step-by-step AI-powered solution in seconds. Live currency, unit and time conversion Convert between 30+ currencies using official ECB rates, with full offline support. Unit, time and percentage converters are built right in for travel, cooking, work or study. Discounts and loans, sorted Work out sale prices and savings instantly, or calculate loan repayments before you commit. Practical tools, no faff. Make it yours Choose from 9 accent themes to match your style, use the Apple Watch app for calculations on the go, and add the interactive widget to your Home Screen for instant access. OneCalc is free to download and use for standard and scientific calculations. Premium unlocks the pay tracker, Scan & Solve, currency conversion, loan and discount calculators, and all themes, with a 3-day free trial. Premium is available as a £9.99 per year subscription or a £29.99 one-time lifetime purchase — your choice, no pressure. One app instead of many. No ads. No accounts. Your data stays on your device. Download OneCalc and see how calm a calculator can feel. https://annmarstudio.co.uk/onecalc/terms https://annmarstudio.co.uk/onecalc/privacy

Screenshots

Honest Mobile4 screens
OneCalc Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: Honest Mobile at none against OneCalc Pro's 2. Honest Mobile also leads on iOS requirement (16.4 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OneCalc Pro sells 2 in-app purchases, starting at $9.99 per year. Honest Mobile asks for nothing beyond the download.

UpkeepUpdate frequency

Honest Mobile ships an update weekly, OneCalc Pro every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Honest Mobile versus OneCalc Pro: the parameters behind the verdict, then further details
ParameterHonest MobileOneCalc Pro
PriceFreeFree
Rating4.8 (6 ratings) — better—
Positive reviews30.9% of reviews—
Number of ratings6 — better—
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, Mac, Apple Watch — better
Requires iOS16.4 — better18.0
Further details — not scored
Size124 MB11 MB
Age rating4+4+
DeveloperHonest EnterprisesANNMAR limited

Bugs and requests

Honest Mobile

Reported bugs

3 issues
  • App freezes and crashes
  • Inconsistent login and account management
  • Billing and payment issues

Requested features

3 requests
  • Expand app compatibility to more popular apps
  • Improve app navigation and user experience
  • Provide more granular network switching controls

OneCalc Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Honest Mobile

No in-app purchases

2 purchases

OneCalc Pro

Subscriptions1
  • OneCalc Premium Annual$9.991 Year
One-time1
  • OneCalc Unlock Everything$29.99

Questions

Is Honest Mobile free?
Honest Mobile is free to download, with no in-app purchases.
Is OneCalc Pro free?
OneCalc Pro is free to download, with in-app purchases available.
Do Honest Mobile or OneCalc Pro have ads?
Neither Honest Mobile nor OneCalc Pro shows ads.
Which is updated more often, Honest Mobile or OneCalc Pro?
Honest Mobile ships an update weekly, and OneCalc Pro every 2 weeks. Most recently, Honest Mobile was updated on November 3, 2026 and OneCalc Pro on October 31, 2026.

Other comparisons