Comparison

CalcuRun vs PrepChef AI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

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.

Highlights
  • AI-driven meal planning
  • Personalized taste and dietary learning
  • Instacart grocery order integration
  • Curated recipe collection
  • Food waste reduction
  • Recipe inspiration
Features
Read full description

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

CalcuRun4 screens
PrepChef AI4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

CalcuRun ships an update every 4 weeks, PrepChef AI weekly. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.

Scorecard3 real differences · 7 level
CalcuRun versus PrepChef AI: the parameters behind the verdict, then further details
ParameterCalcuRunPrepChef AI
PriceFreeFree
Rating5.0 (6 ratings)5.0 (10 ratings)
Positive reviews—100.0% of reviews
Number of ratings610 — better
Update frequencyEvery 4 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.615.1 — better
Further details — not scored
Size2 MB50 MB
Age rating4+4+
DeveloperJoseph IannazzoneAM Collective LLC

Customer experience

CalcuRun

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

PrepChef AI

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

5 purchases

CalcuRun

One-time5
  • 1 Mile$0.99
  • 5K$1.99
  • Turkey Trot$3.99
Show 2 more
  • Half Marathon$5.99
  • Marathon$9.99
1 purchases

PrepChef AI

Subscriptions1
  • Head Chef$11.991 Month

Questions

Is CalcuRun free?
CalcuRun is free to download, with in-app purchases available.
Is PrepChef AI free?
PrepChef AI is free to download, with in-app purchases available.
Which has better reviews, CalcuRun or PrepChef AI?
CalcuRun and PrepChef AI are both rated 5.0 out of 5 on the App Store, from 6 and 10 ratings respectively.
Do CalcuRun or PrepChef AI have ads?
Neither CalcuRun nor PrepChef AI shows ads.
Which is updated more often, CalcuRun or PrepChef AI?
CalcuRun ships an update every 4 weeks, and PrepChef AI weekly. Most recently, CalcuRun was updated on September 9, 2026 and PrepChef AI on September 18, 2026.

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