KuCalc vs Gratuity Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KuCalc
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It is a calculator with basic functions. We pursued ease of use with a minimum number of buttons. It has a history function. It can copy the results to clipboard.
Gratuity Lab
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Know what you’re tipping on. Gratuity Lab brings receipt scanning, amount verification and bill splitting into one clear workflow. SCAN, THEN CHECK • Scan with the camera or choose receipt photos. • Recognize text on your device. • Compare detected amounts with the original receipt and zoom in on the evidence. • Review uncertain values and detected charges before using the numbers. • Try a sample receipt without camera or photo access. SPLIT WITH CONFIDENCE • Choose pre-tax or after-tax tipping. • Use custom percentages or your own quick-tip presets. • Divide a bill among up to 100 people. • See how any remaining cents are allocated when equal shares do not add up exactly. • Keep exact amounts or round the total or each person’s share. KEEP THE DETAILS • Save bills and receipt images in local history. • Search by merchant, add notes and reopen a calculation. • Share a calculation summary. READY FOR YOUR ROUTINE Choose currencies and regional number formats. Use light or dark appearance on iPhone and iPad. Choose from 50 interface language and regional editions. No account is required. Calculations, receipt recognition and saved history work on your device. Recognition results should always be checked against the receipt. Detected service charges and included gratuities are shown for review and are not automatically added to your tip calculation. The app includes banner advertising, with consent and privacy options where required. SAVE YOUR WAY Choose app history, Photos, both, or not now. Remember your choice for next time and change it in Settings. Receipt recognition language support varies by device and iOS version; unsupported languages can be entered manually. Currency selection formats amounts; it does not convert exchange rates.
Screenshots
Verdict
The clearest difference is ads: KuCalc at none against Gratuity Lab's shown. KuCalc also leads on iOS requirement (11.0 vs 17.0). Gratuity Lab's advantage is update cadence (every 5 days vs every 3 months). On price, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
KuCalc ships an update every 3 months, Gratuity Lab every 5 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.
| Parameter | KuCalc | Gratuity Lab |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 10 MB |
| Age rating | 17+ | 4+ |
| Developer | Mineaki Sakatoku | Wenbin lei |
In-app purchases
KuCalc
No in-app purchases
Gratuity Lab
No in-app purchases









