SumKey vs FasterCopy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SumKey
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Need to do quick math while typing? Stop app-switching. SumKey puts a calculator inside your keyboard: type an expression anywhere (Notes, chats, email) and tap "=" to get the answer, or long-press "=" to keep just the result. Split a bill, quote a price, check a discount: wherever numbers come up, finish the math right there. KEY FEATURES ● Calculate as you type: tap "=" after any expression and the answer appears inline; long-press "=" to keep just the result ● Percent math the way you think: 4500 - 15% gives the discounted amount instantly ● History inside the keyboard: tap to re-insert a previous result or the whole expression; clearing always asks for confirmation ● Customizable toolbar: clear, cursor keys, forward delete, dismiss keyboard. Add, remove, and reorder freely, or create one-tap custom text keys ● Rearrangeable keys: swap the operator column and function keys; the spare key slot can be ( ), 00, 0.00 and more ● f(x) panel for advanced functions: √, x², x^y, sin/cos/tan, ln, log, π and more ● Every calculation rule is a setting: 0–8 decimal places, rounding mode, thousands separators, implicit multiplication, auto-closing parentheses, operator spacing ● Home Screen widget: calculate on your Home Screen (iOS 17+), sharing the keyboard's settings ● Make it yours: light and dark themes that follow the system, 8 accent colors, and your choice of a black or white app icon ● Localized in English, Traditional Chinese, Japanese, and Simplified Chinese PRIVACY: WE CAN'T SEE WHAT YOU TYPE SumKey never asks for Full Access. That is a system-level guarantee: we cannot see, store, or upload anything you type. The keyboard cannot connect to the internet, contains no analytics or tracking, and works fully offline. Your calculation history stays on your device only. ONE-TIME PURCHASE Pay once, own everything. No subscription, no ads, no account, no in-app purchases. SUPPORT Questions or ideas? Email doka.software@gmail.com
FasterCopy
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FasterCopy is a private library of reusable message templates. Write a sentence once, drop in smart chips for dates, times, duration, people, and places, then fill and copy whenever you need it. WHAT YOU CAN DO • Keep templates for meeting invites, lesson reminders, follow-ups, and prompts • Insert smart chips instead of retyping dates, start/end times, duration, names, and locations • Fill a template, preview the exact plain text, and copy it to the clipboard in one tap • Reuse remembered values so repeat messages take seconds, not a rewrite • Copy with today’s date when the wording stays the same but the day changes • Organize templates in collections and keep people, places, and other lists on device BUILT FOR REPEAT WORK • Teachers, coaches, freelancers, and anyone who sends the same kind of message every week. Open a template, adjust a chip, copy, paste into Messages, Mail, or any other app. PRIVATE BY DESIGN • Everything stays on your iPhone. No account, no cloud sync, no keyboard extension. FasterCopy is free to use. A one-time FasterCopy Pro purchase unlocks the full library if you need more templates and lists. Paste ready text. Stop rewriting the same sentence.
Screenshots
Verdict
The clearest difference is price: FasterCopy at Free against SumKey's $1.99. FasterCopy also leads on update cadence (every 2 days vs every 9 days). SumKey's advantage is in-app purchases (none vs 1). 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
FasterCopy is free to download; SumKey costs $1.99 up front. FasterCopy sells 1 one-off in-app purchase. SumKey asks for nothing beyond the download.
SumKey ships an update every 9 days, FasterCopy every 2 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | SumKey | FasterCopy |
|---|---|---|
| Price | $1.99 | Free — better |
| Update frequency | Every 9 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Che Wei Li | Weng Hou Lam |
In-app purchases
SumKey
No in-app purchases
FasterCopy
- FasterCopy Pro Lifetime$4.99









