Acute Calculator vs VOID
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
VOID
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Have your storage under control. VOID shows what is using space on this iPhone and lets you free it up on your terms, in a way that feels like scrolling a feed instead of doing chores. VOID reads the Photos library on your iPhone and shows what is taking up room: large and long videos, 4K clips, screen recordings, screenshots, similar and duplicate photos, Live Photos and oversized images. Everything runs on your device. Nothing is uploaded. Nothing is deleted without your confirmation. YOUR LIBRARY, AS A FEED Open the Feed and your own photos and videos appear as posts, ranked by how much space they take and how little you are likely to miss them. Each post shows the size, the duration and why VOID picked it. Tap Trash or Keep, double-tap to keep, and move on. There is nobody else here: no accounts, no ads, no followers, just your library. STORIES YOU TAP THROUGH At the top of the Feed, stories group your library the way you would want to review it: Biggest, Screenshots, Recordings, Longest, Similar, Duplicates, Blurry, what is stored on this device, and one story for every year. Tap through a story like you do everywhere else, swipe to the next one, and decide as you go. ONE TRASH, EMPTIED WHEN YOU SAY Everything you trash lands in the Trash tab and waits there, like on a Mac. Put anything back with one tap or empty the whole bin when you are ready. Deletions go through the standard iOS confirmation and stay in Recently Deleted for 30 days. LIBRARY GRID Photos and videos in one grid, with size and duration on every tile. Pinch or tap to change the grid size, filter by videos, photos, screenshots or what is stored on this device, and sort by date, size or length. A LIVE DRIVE GAUGE AND SECTOR MAP Home shows how much of this device is used, how much is free, and how much you could get back right now. Every cell in the storage map stands for a slice of your device: videos, photos, screenshots, apps and system, free space. ICLOUD VS THIS DEVICE Many libraries live mostly in iCloud. VOID shows what is stored on this iPhone and what only lives in the cloud, so you know which deletions actually free space here. SIMILAR AND DUPLICATE PHOTOS VOID groups shots that look alike and suggests the sharpest one to keep. You make the final call. WHAT TO EXPECT • Photos and videos never leave your iPhone • No ads, no tracking, no accounts • Nothing is deleted until you empty the Trash, and iOS asks once more • Deleted items stay in Recently Deleted for 30 days • The free tier includes the full scan and 500 MB of cleanup VOID PRO VOID Pro removes the cleanup limit. Pay yearly, or once for lifetime access. Privacy policy: https://www.skylarks.io/apps/void/privacy-policy Terms of service: https://www.skylarks.io/apps/void/terms-of-service
Screenshots
Verdict
The clearest difference is iOS requirement: Acute Calculator at 16.0 against VOID's 18.0. On price, update cadence, ads and in-app purchases 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 VOID sells 2 in-app purchases, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.
| Parameter | Acute Calculator | VOID |
|---|---|---|
| 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 | Every 2 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 16 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Find App, Inc. | Przemyslaw Skowronek |
Bugs and requests
Acute Calculator
Reported bugs
6 issues- Animation and UI bugs
- Discount button crashes app
- Animation lags and skips when sliding down history
- Calculations are incorrect
- Does not follow correct order of operations
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- Transition for history is slow
Requested features
11 requests- Make app icon simpler/restrained
- Add units to graph
- Allow press and hold on graph lines for values
- Support Korean language
- Display commas while entering numbers
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- Double-tap to recenter graph interface
- Ability to solve for a variable
- Dedicated button for +/-
- Option to pin in control center
- Make comma separator format selectable
- Improve app icon design
VOID
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Acute Calculator
- Acute Plus Limited-Time Offer$3.49
- Acute Plus (For Students)$4.99
- Acute Plus (One Time)$6.99
VOID
- VOID Pro Yearly$19.991 Year
- VOID Pro Lifetime$39.99









