Comparison

Plank Challenge vs didit.fyi

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

Head to head
About

Plank Challenge

This app guides you through a 5-week program to build up to a 4-minute plank. It requires no equipment and can be done in just 4 minutes daily, with rest days incorporated for recovery. It also includes a bonus push-up progression.

Highlights
  • 5-week structured plank program
  • Progressive push-up training
  • Daily workout instructions
  • Progress tracking
  • Apple Music integration
  • Distraction-free interface
Features
Read full description

Hold a 4-minute plank in just 5 weeks – no gym, no equipment, only a few minutes a day. Plank Challenge is a proven, progressive program that takes you from beginner to a 4-minute plank, step by step. HOW IT WORKS - Train 4 days, rest 3 – your muscles get time to recover and grow stronger - Progressive plan designed to prevent injury - Clear daily instructions and progress tracking - Bonus: build from 1 to 100 push-ups at your own pace WHY PLANKS? Planks strengthen your abs, back and arms at the same time. They're one of the most effective bodyweight exercises for core stability and overall strength. FEATURES - 5-week structured program - Push-up challenge from 1 to 100 - Progress tracking - Apple Music integration – your music resumes automatically after each workout - Simple, distraction-free design FOR BEGINNERS AND RETURNERS Whether you're brand new or getting back into shape, the program meets you where you are. PRO - Ad-free - 4 premium themes - Trophy Room - Advanced statistics - Lifetime access – pay once Join 127,000+ people who have built a stronger core with Plank Challenge. Download now and see what you're capable of.

About

didit.fyi

Read full description

You start a program. Week one goes great. Then life gets in the way—bad sleep, travel, stress—and the plan falls apart. didit makes sure it doesn't. Upload any training program as a PDF and the AI follows along, adjusting workouts when you miss sessions, switch gyms, or need extra recovery. No program? No problem—just start logging and the AI learns how you train and builds workouts for you. Smart workout generation Every session is tailored to your training history, recovery data, and what's actually going on in your life. Missed a day? The AI reshuffles. Feeling run down? It adapts. Just open the app and train. Effortless logging Weight, reps, done. Smart suggestions are pre-filled so logging takes seconds. Works with any equipment—barbells, cables, unitless machines, bodyweight—no friction. Journal for context Add notes about sleep, stress, or how you're feeling. The AI uses this to make better decisions about your training. Track your form Upload videos and photos tagged to specific exercises to monitor technique over time. Wearable integrations Connect WHOOP, Garmin, or Strava to add recovery and cardio context. The app works great without them too. Sync with Strava Automatically share completed workouts to your Strava feed. Bring your history Switching from another app? Import your data from Strong in seconds. More sources coming soon. Whether you follow a coach's program or let the AI guide you, didit removes the decision fatigue so you can just show up and lift. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Plank Challenge4 screens
didit.fyi4 screens

Verdict

The call

The clearest difference is ads: didit.fyi at none against Plank Challenge's shown. On price, update cadence, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Plank Challenge sells 1 one-off in-app purchase and didit.fyi sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard1 real difference · 9 level
Plank Challenge versus didit.fyi: the parameters behind the verdict, then further details
ParameterPlank Challengedidit.fyi
PriceFreeFree
Rating4.7 (472 ratings) — better—
Positive reviews65.7% of reviews—
Number of ratings472 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size17 MB56 MB
Age rating4+4+
DeveloperBo KalvslundMithras R&D AS

Bugs and requests

Plank Challenge

Reported bugs

4 issues
  • App crashes after iOS 13 update
  • No times displayed after iOS 13 update
  • Audio mutes automatically between active and rest
  • App not running after iOS 13 update

Requested features

10 requests
  • Allow self-designed workouts
  • Integrate reminders
  • Add in-app music or motivational sounds
  • Provide explanation on different plank types
  • Include countdowns and motivational cues
Show 5 more
  • Suggest exercises for rest periods
  • Modern and minimalist design
  • Add a training plan for push-ups
  • Voice countdown for seconds
  • Dark mode option

didit.fyi

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Plank Challenge

One-time1
  • Plank Challenge Pro$0.99
2 purchases

didit.fyi

Subscriptions2
  • didit.fyi Premium$12.991 Month
  • didit.fyi Premium$99.991 Year

Questions

Is Plank Challenge free?
Plank Challenge is free to download, with in-app purchases available.
Is didit.fyi free?
didit.fyi is free to download, with in-app purchases available.
Do Plank Challenge or didit.fyi have ads?
Plank Challenge shows ads; didit.fyi does not.
Which is updated more often, Plank Challenge or didit.fyi?
Plank Challenge ships an update every 3 weeks, and didit.fyi every 3 weeks. Most recently, Plank Challenge was updated on October 29, 2026 and didit.fyi on October 24, 2026.

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