Freestyle Calculator vs AppSaver
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Freestyle Calculator
This app offers real-time calculation previews and flexible expression editing, eliminating the need for an equals button. It saves all calculations with a searchable history and includes unit and currency conversion. Advanced features allow for custom keyboard layouts, themes, and cloud synchronization.
- Real-time calculation preview
- Flexible expression editing
- Searchable calculation history
- Unit and currency conversion
- Customizable keyboard layouts
- Cloud synchronization
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Freestyle Calculator gives you real-time expression editing on iPhone and iPad. Start typing and watch the result update live — no equals button needed. Move the cursor anywhere in your expression, edit freely, and the preview adjusts instantly. Every calculation is saved with a searchable, annotated history. CORE FEATURES ▸ Real-time preview — see results as you type ▸ Expression editing — backspace, insert, or reposition the cursor ▸ Searchable history — pin, copy, annotate, or reuse any calculation ▸ Unit conversion — length, mass, area, volume, temperature, time ▸ Reference exchange rates — multiple providers with automatic fallback ▸ Widgets — exchange rates and formulas on your home and lock screen PRO FEATURES ▸ Keyboard Studio — rearrange keys, save multiple layouts (Compact / Standard / Scientific) ▸ Theme Studio — 10 keyboard themes, accent colors, key density, dark mode ▸ Custom Formulas — reusable workflows with variables and live FX rates ▸ Sessions — organize work into named groups with notes and pins ▸ Cloud Sync — back up everything to iCloud, restore on any device Always available: real-time preview, full history, unit conversion, and scientific keys. No ads, no accounts, no server dependency. Your data stays on your device by default. Privacy Policy: https://apps.foamzou.com/freestyle-calculator/privacy/ Terms of Use: https://apps.foamzou.com/freestyle-calculator/terms/
AppSaver
This tool helps users save and organize App Store apps for research and inspiration. It automatically fetches app details and allows for custom tagging to build a personal library of useful applications.
- Save App Store apps
- Automatic app information parsing
- Organize with custom tags
- Search, sort, and browse views
- iCloud synchronization
- Competitor research and design inspiration
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AppSaver is an app collection and research tool built for indie developers, product managers, designers, and anyone who loves discovering great apps. See an app worth studying? Save it to AppSaver instead of relying on scattered screenshots, browser bookmarks, or notes. Simply paste an App Store link to save key app information such as the app name, icon, developer, category, rating, screenshots, and store details. Add custom tags to organize apps by competitor, design inspiration, subscription model, pricing strategy, ASO reference, product ideas, and more. Build your own searchable app library for product research, competitor analysis, and design inspiration. 【Save Apps for Later】 Keep interesting App Store apps in one organized place. Save competitors, design references, product ideas, pricing examples, and apps you want to revisit later. 【Competitor & Product Research】 AppSaver makes it easier to build a long-term research library for: • Competitor analysis • Product research • Market research • Pricing strategies • Subscription models • ASO reference • Product ideas • App discovery Instead of losing useful apps in screenshots or browser tabs, keep everything organized in one searchable collection. 【Design Inspiration】 Save apps with great interfaces, interactions, onboarding flows, or product ideas. Use your collection as a personal inspiration library for: • UI / UX design • Product design • App ideas • Interface references • Feature research • Design case studies 【Custom Tags】 Create your own tags and organize saved apps however you like. For example: Competitors Design Inspiration UI Reference Subscriptions Pricing ASO Product Ideas Wishlist As your collection grows, tags make it easy to find exactly what you need. 【Search & Browse】 Quickly search, sort, and browse your saved apps. Switch between card and list views to review your collection in the way that works best for you. 【iCloud Sync】 Your saved apps, tags, and research data can sync through iCloud. Switch devices or reinstall AppSaver and continue using your collection without starting over. 【Made For】 • Indie developers researching competitors and pricing • Product managers collecting product ideas and market references • UI / UX designers saving design inspiration • App marketers organizing ASO and product research • App enthusiasts building a personal app wishlist 【Free to Try, One-Time Upgrade】 Free users can save up to 10 apps. Upgrade to AppSaver PRO with a one-time purchase to unlock unlimited app collection and all premium features permanently. No subscription required. Save every app worth studying. A small idea you discover today could inspire your next great product.
Screenshots
Verdict
Freestyle Calculator and AppSaver both sit at 5.0 stars, but that hides the real split: 100% of Freestyle Calculator's written reviews are positive against 73% of AppSaver's. Freestyle Calculator also leads on ratings volume (8 vs 1). AppSaver's advantage is update cadence (daily vs weekly). On price, rating, 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. Freestyle Calculator sells 6 in-app purchases, starting at $0.99 per month and AppSaver sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Freestyle Calculator against 5.0 for AppSaver. That said, the two scores are not equally well evidenced: Freestyle Calculator has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 100% of Freestyle Calculator's written reviews are positive against 73% of AppSaver's.
Freestyle Calculator ships an update weekly, AppSaver daily. The most recent releases landed on October 28, 2026 and October 10, 2026 respectively.
| Parameter | Freestyle Calculator | AppSaver |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews — better | 72.7% of reviews |
| Number of ratings | 8 — better | 1 |
| Update frequency | Weekly | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 27 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | 锋 邹 | 凯丽 孟 |
Customer experience
Freestyle Calculator
AppSaver
In-app purchases
Freestyle Calculator
- CalcStudio Pro Monthly$0.991 Month
- CalcStudio Pro Annual7 Days trial$3.991 Year
- Small Tip$0.99
- Medium Tip$3.99
- CalcStudio Pro Lifetime$7.99
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- Large Tip$9.99
AppSaver
- PRO$1.99
Questions
Is Freestyle Calculator free?
Is AppSaver free?
Which has better reviews, Freestyle Calculator or AppSaver?
Do Freestyle Calculator or AppSaver have ads?
Which is updated more often, Freestyle Calculator or AppSaver?
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