100% Percent Calculator vs PanicButton+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
100% Percent Calculator
This app simplifies complex percentage calculations using natural language, making it accessible for individuals with dyscalculia or a fear of numbers. It helps with discounts, sales tax, tips, and more, offering an intuitive interface that guides users through problems.
- Natural language calculations
- Discount calculations
- Sales tax and VAT addition
- Tip calculation
- Intuitive user interface
- Dyscalculia-friendly
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The percent calculator that asks you the right question, instead of making you remember the formula. WHAT YOU CAN CALCULATE • Discount: how much off, or the final price after X% off • Sales tax / VAT: add or remove tax from a price • Tips: how much to leave, or what percentage someone tipped you • Profit margin & markup: for shop owners pricing inventory • "What percent is X of Y" and the rest of the basics REAL-LIFE USE CASES At the till deciding if "30% off" is actually a good deal. Adding VAT to a quote for a client. Splitting a restaurant bill after a couple of drinks (we've all been there). Pricing your own products with the right margin. The app is built around "what are you trying to figure out?" — not "here are all the buttons, good luck." CONVERTERS • Length and imperial ↔ metric, built in • Live currency conversion with daily exchange rates (Pro) PRO — ONE-TIME PURCHASE Pro is a single purchase. No subscription, ever. • Calculation history — tap any past result to copy it • Custom default values per calculator (e.g. always pre-fill your usual tax rate) • Live currency converter • Unlimited favorite calculators (free users get one) • Pick your accent color Built and maintained by a one-person indie studio. Buying Pro once keeps the lights on.
PanicButton+
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If you're lost and/or if you need help, this application helps to be found and rescued. Just pre set one of your contacts address book and write a message. Pressing the panic button is created a message with your location and sent to the contact your previously defined. The message contains the coordinates of your location and a link to Google Maps, which shows you where you are.
Screenshots
Verdict
The clearest difference is price: 100% Percent Calculator at Free against PanicButton+'s $1.99. 100% Percent Calculator also leads on update cadence (every 10 days vs every 12 months). PanicButton+'s advantage is in-app purchases (none vs 4). On ads, device support and iOS requirement 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
100% Percent Calculator is free to download; PanicButton+ costs $1.99 up front. 100% Percent Calculator sells 4 one-off in-app purchases. PanicButton+ asks for nothing beyond the download.
100% Percent Calculator ships an update every 10 days, PanicButton+ every 12 months. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.
| Parameter | 100% Percent Calculator | PanicButton+ |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 10 days — better | Every 12 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 17.5 — better |
| Further details — not scored | ||
| Size | 5 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Andre Johansen | Paulo Correia |
In-app purchases
100% Percent Calculator
- Small$0.99
- Medium$1.99
- Large$2.99
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- 100% Pro$19.99
PanicButton+
No in-app purchases
Questions
Is 100% Percent Calculator free?
Is PanicButton+ free?
Do 100% Percent Calculator or PanicButton+ have ads?
Which is updated more often, 100% Percent Calculator or PanicButton+?
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