CalcuRun vs PrepChef AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalcuRun
This app helps runners predict race times, plan training paces, and calculate race splits. It offers a science-based approach to training, with predictions based on recent performance. All calculations are done on-device for privacy.
- Predict race times based on recent performance
- Plan workout paces
- Calculate race splits
- Support for custom race distances
- iCloud sync across devices
- On-device calculations for privacy
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Tired of juggling apps, websites, and bookmarks to plan your race training? CalcuRun is an all-in-one solution — completely free, with no ads and no accounts. Newly redesigned in version 3.0 with a chronograph-inspired look and a dot-matrix display, CalcuRun helps you predict race times, plan splits, and dial in your workout paces. Features * Input a recent race or time trial and get accurate predictions across common race distances. * Use the "Other" race distance for non-standard events. * View splits for each race, in kilometers or miles. * Get workout paces based on your predictions. * Use the Calculator to plan an individual race — input a time or pace and calculate the other. * Sync your saved races and predictions across your iPhone and iPad with iCloud. * Redesigned iPad layout with a sidebar that takes advantage of the bigger screen. * Choose between the new dot-matrix display font or the system monospaced face. * Learn more about how the calculations are performed. Most importantly, your data is private. Calculations run entirely on your device. CalcuRun does not require an account, internet access, or any device permissions. iCloud sync is fully encrypted, and your data is never sent to a CalcuRun server. If you choose to follow any in-app links, only the URL is passed to your default browser.
PrepChef AI
This app simplifies meal planning by learning your preferences and dietary needs. It integrates with grocery delivery services and offers a curated collection of recipes, helping you reduce food waste and avoid last-minute takeout.
- AI-driven meal planning
- Personalized taste and dietary learning
- Instacart grocery order integration
- Curated recipe collection
- Food waste reduction
- Recipe inspiration
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Meet Saffy, your personal sous chef. PrepChef AI takes the guesswork out of "what's for dinner" — from inspiration to your doorstep. Effortless Meal Planning Build a full week of meals in minutes. Saffy learns your tastes, dietary needs, and what's already in your kitchen — so you get suggestions you'll actually want to cook, with less food waste and fewer last-minute takeout orders. Instacart Integration Turn any recipe into a grocery order with one tap. Missing an ingredient? Add it straight to your cart so you're never stuck mid-recipe. Sweet & Savory Treats Featuring a hand-picked recipe collection from foodie creator Sweet & Savory Treats. Comfort food and treat recipes you can trust. Why PrepChef AI: Full loop from inspiration → planning → grocery delivery Personalized to your tastes and cooking style Featuring original recipes from a foodie creator, alongside Saffy's AI-generated suggestions Download PrepChef AI and let Saffy handle the planning - you handle the eating.
Screenshots
Verdict
The clearest difference is monetization model: CalcuRun at free against PrepChef AI's freemium. PrepChef AI's advantage is update cadence (weekly vs every 4 weeks) and iOS requirement (15.1 vs 18.6). On price, rating, ratings volume and ads 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. CalcuRun sells 5 one-off in-app purchases and PrepChef AI sells 1 in-app purchase, starting at $11.99 per month. 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 CalcuRun against 5.0 for PrepChef AI. Both are backed by a comparable volume of ratings — 6 and 10 respectively.
CalcuRun ships an update every 4 weeks, PrepChef AI weekly. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.
| Parameter | CalcuRun | PrepChef AI |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) | 5.0 (10 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 6 | 10 — better |
| Update frequency | Every 4 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 2 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Joseph Iannazzone | AM Collective LLC |
Customer experience
CalcuRun
PrepChef AI
In-app purchases
CalcuRun
- 1 Mile$0.99
- 5K$1.99
- Turkey Trot$3.99
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- Half Marathon$5.99
- Marathon$9.99
PrepChef AI
- Head Chef$11.991 Month









