Acute Calculator vs PDF Lighter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Acute Calculator
This advanced graphing calculator offers a visual editor and supports over 30 functions. It includes features like a history tape, variable storage, and an intuitive palette system for complex calculations.
- Visual editor
- 30+ functions supported
- History tape
- Store variables
- Intuitive palette system
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+ Easy to use visual editor + Supports 30+ functions + Intuitive palette system + Comes with history tape + Store variables for later + No ads or subscriptions Terms of Use: https://acutecalc.app/terms Privacy Policy: https://acutecalc.app/privacy
PDF Lighter
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DF Lighter shrinks oversized PDFs on iPhone and Mac — without ever uploading your files. A PDF too heavy for an email, an online form, or an upload? Open it, pick a compression level, and get a much lighter version in seconds. • DEAD SIMPLE Three steps: pick a PDF, set the level, compress. That's it. • 4 COMPRESSION LEVELS From "Light" (near-original quality) to "Extreme" (smallest possible) — pick the right size/quality balance. • 100% ON YOUR DEVICE Compression runs locally. Your documents never leave your iPhone or Mac: nothing is sent to a server. • PRIVACY-FIRST No data collected. No trackers, no ads, no account. The app even works offline. • FREE Totally free, with no in-app purchases. Compare the before/after size, then save or share your lighter PDF. ``` ## 5. What's New (this version) ``` First release of PDF Lighter. Thanks for trying it! ```
Screenshots
Verdict
The clearest difference is iOS requirement: Acute Calculator at 16.0 against PDF Lighter's 26.5. On price, ads, 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. Acute Calculator sells 3 one-off in-app purchases and PDF Lighter sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
| Parameter | Acute Calculator | PDF Lighter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (116 ratings) — better | — |
| Positive reviews | 94.9% of reviews | — |
| Number of ratings | 116 — better | — |
| Update frequency | Every 2 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 26.5 |
| Further details — not scored | ||
| Size | 16 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Find App, Inc. | MANUEL NOVO LOPES |
In-app purchases
Acute Calculator
- Acute Plus Limited-Time Offer$3.49
- Acute Plus (For Students)$4.99
- Acute Plus (One Time)$6.99
PDF Lighter
- Small tip$0.99
- Medium tip$3.99
- Big tip$3.99
Questions
Is Acute Calculator free?
Is PDF Lighter free?
Do Acute Calculator or PDF Lighter have ads?
Other comparisons
