COREY POWER vs Freestyle Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
COREY POWER
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Photovoltaic power plant operation management, convenient and quick view of the power plant. Master the status of the power station in real time. Every day, every month, every year, the power generation is clear at a glance. [warm tips] -COREY POWER will continue to use GPS positioning service when creating the power station, which will consume more power and affect battery life compared with other operations.
Freestyle Calculator
This app offers real-time expression editing with instant results as you type, eliminating the need for an equals button. It features a searchable history, unit conversions, and customizable keyboard layouts and themes for a personalized calculation experience.
- Real-time expression preview
- Live editing with cursor repositioning
- Searchable, annotated calculation history
- Unit conversions for various metrics
- Customizable keyboard layouts and themes
- Cloud sync for backup and restore
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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/
Screenshots
Verdict
The clearest difference is in-app purchases: COREY POWER at none against Freestyle Calculator's 6. COREY POWER also leads on iOS requirement (13.0 vs 16.0). Freestyle Calculator's advantage is update cadence (weekly vs every 3 weeks). On price, ads 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. Freestyle Calculator sells 6 in-app purchases, starting at $0.99 per month. COREY POWER asks for nothing beyond the download.
COREY POWER ships an update every 3 weeks, Freestyle Calculator weekly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.
| Parameter | COREY POWER | Freestyle Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (8 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 8 — better |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 51 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Chengdu E-Linter Information Technology Co., Ltd. | 锋 邹 |
In-app purchases
COREY POWER
No 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









