Aspect Ratio Pro vs Inventory Snap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Aspect Ratio Pro
This app helps you quickly solve for an unknown value in a proportion. Simply input three known numbers, and it will calculate the fourth, making ratio and proportion calculations effortless.
- Rule of three calculations
- Instant fourth value calculation
- Ratio and proportion solver
- Intuitive input interface
- Supports iPhone and Mac
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Your new rule-of-three sidekick. Enter three values, and the app instantly finds the fourth. Perfect for calculating ratios and proportions when one value is missing. ⁂ Support If you need help or want to make a feature suggestion, I’d love hearing from you → https://appahead.studio/help/ Feedback Enjoying Aspect Ratio Pro? I’d love your support with a kind review on the App Store. About I’m Martin — designer, developer, and founder of App ahead. Since 2015, I’ve been creating ambitious apps for Apple devices, driven by a strong vision and thoughtful, forward-thinking design. Terms of Use: https://appahead.studio/terms Privacy Policy: https://appahead.studio/privacy
Inventory Snap
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Inventory Snap is a fast, offline barcode inventory tracker. Scan items, track stock levels and low-stock alerts, organize by location and category, and export clean CSV for Etsy, eBay, Shopify, Numbers and accounting — all on your phone, no account required. Free for up to 10 items; upgrade to Pro for unlimited items and full CSV export. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Inventory Snap at Free against Aspect Ratio Pro's $3.99. Inventory Snap also leads on update cadence (every 5 days vs every 3 weeks). On ads, in-app purchases, 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
Inventory Snap is free to download; Aspect Ratio Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Aspect Ratio Pro ships an update every 3 weeks, Inventory Snap every 5 days. The most recent releases landed on September 10, 2026 and September 22, 2026 respectively.
| Parameter | Aspect Ratio Pro | Inventory Snap |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, Mac — better | iPhone |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | App ahead GmbH | Evgenii Sinitsyn |
In-app purchases
Aspect Ratio Pro
No in-app purchases
Inventory Snap
No in-app purchases
