Comparison

Gridlines Training vs Diesel

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

Head to head
About

Gridlines Training

Features
Read full description

Gridlines keeps your program, today’s training, and workout history in one place. FOLLOW THE PLAN See exactly what is scheduled today, move through each session, and understand how the current day fits into your full training plan. LOG THE WORK Record sets, reps, load, time, distance, and effort as you train. Prescribed targets and built-in rest timing keep the session moving without losing the details. TRAIN FROM YOUR WRIST Use the Apple Watch companion to open today’s sessions, log sets, adjust results, rate effort, and keep working when your phone is briefly out of reach. With permission, Gridlines can save completed Watch workouts to Apple Health and show heart rate during a session. SEE YOUR PROGRESS Review completed workouts and training trends in Activity. You can also match compatible workouts already stored in Apple Health to Gridlines sessions. STAY CONNECTED Follow programming from your coach or organization and keep up with your training community in one app. Gridlines is designed for fitness and training. It does not provide medical advice, diagnosis, or treatment. Apple Health access is optional.

About

Diesel

Browse class schedules, filter by type, and book reservations. Manage your upcoming classes and stay committed to your fitness goals with easy access to class packs and memberships.

Highlights
  • Purchase class packs and memberships
  • Browse and filter class schedules
  • Book class reservations
  • Manage upcoming classes
  • Stay organized with fitness goals
Features
Read full description

Features: - Purchase Class Packs and Memberships Easily browse and purchase our class packs or membership options - View our schedule Filter classes by type to find the perfect fit for your routine. - Manage your reservations Book your class reservations with ease. Keep track of your upcoming classes and manage your schedule to stay organized and committed to your fitness goals.

Screenshots

Gridlines Training3 screens
Diesel4 screens

Verdict

The call

The clearest difference is iOS requirement: Diesel at 16.0 against Gridlines Training's 26.2. On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Gridlines Training ships an update every 3 weeks, Diesel fortnightly. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.

Scorecard1 real difference · 8 level
Gridlines Training versus Diesel: the parameters behind the verdict, then further details
ParameterGridlines TrainingDiesel
PriceFreeFree
Rating—5.0 (16 ratings) — better
Number of ratings—16 — better
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS26.216.0 — better
Further details — not scored
Size31 MB38 MB
Age rating4+4+
DeveloperKyle Joseph WilcoxDIESEL FITNESS, INC.

In-app purchases

None

Gridlines Training

No in-app purchases

None

Diesel

No in-app purchases

Questions

Is Gridlines Training free?
Gridlines Training is free to download, with no in-app purchases.
Is Diesel free?
Diesel is free to download, with no in-app purchases.
Do Gridlines Training or Diesel have ads?
Neither Gridlines Training nor Diesel shows ads.
Which is updated more often, Gridlines Training or Diesel?
Gridlines Training ships an update every 3 weeks, and Diesel fortnightly. Most recently, Gridlines Training was updated on October 4, 2026 and Diesel on October 17, 2026.

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