Comparison

Triathlon vs Sidewall

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

Head to head
About

Triathlon

Features
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Calculate you event total time. Put in you distance and pace for calculate end time, or pace and end time will give you the distance and so on. All the way thru the three disciplines the total time is calculated and showed under the calculation fields. Perfect for planning your total event end time. You can disable disciplins and calculate for duathlon or single discipline.

About

Sidewall

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Sidewall is a precision tire pressure calculator built specifically for cyclists who care about how their bike feels on the road, gravel, or trail. Dial in the right pressure for your exact setup using multiple trusted calculation models. Save your bikes, wheelsets, and tire configurations. Compare algorithm outputs side by side. Adjust for conditions, temperature, and riding style. Sync seamlessly across your devices with iCloud. Sidewall removes the guesswork so you can focus on the ride. ### Features **Bike Support** - Road, Gravel, and MTB categories - Category-specific weight distribution defaults - E-bike support with automatic weight adjustments - Save unlimited bike profiles with photos **Calculation Engines** - Multiple tire calculation engines supported **Setup Configuration** - Multiple wheel/tire setups per bike - Tire width with rim-width-aware actual width calculation - 700c, 650b, 29", 27.5", and 26" wheel sizes - Tubeless and tubed tire support - Casing types: Lightweight, Standard, Reinforced - Tire insert support for lower pressures **Conditions & Adjustments** - Surface conditions: Smooth, Average, Rough (road) / Chunky, Rowdy (gravel) / XC, Trail, Enduro (MTB) - Wet condition toggle - Speed category: Recreational, Enthusiast, Racer, Pro - Temperature-aware calculations (inflation vs. riding temp) - Gear weight per calculation - Session weight override without affecting global settings **Safety & Limits** - Hooked and hookless rim guidance with automatic 72.5 PSI ETRTO max enforcement - Custom tire and rim max pressure limits - Visual clamping indicators for pressure limits - Warning system with severity levels **Units & Preferences** - Pressure: PSI, bar, kPa - Weight: kg, lbs - Locale-aware defaults **Data & Privacy** - Fully offline functionality - Private iCloud sync (no accounts, no tracking) - Calculation history with saved conditions - More information at https://timheuer.github.io/sidewallapp/privacy/ Sidewall is designed to be fast, clean, and purpose-built. No clutter. No unnecessary features. Just accurate pressure recommendations based on your setup. **Because the difference is in the pressure.** *Algorithm names reference publicly documented pressure calculation methods. Silca, Wolftooth, ENVE, Rene Herse, and SRAM are registered trademarks of their respective owners. This app is not affiliated with or endorsed by these companies.*

Screenshots

Triathlon4 screens
Sidewall4 screens

Verdict

The call

The clearest difference is price: Sidewall at Free against Triathlon's $0.99. Sidewall also leads on update cadence (every 5 days vs every 8 months) and iOS requirement (18.0 vs 26.0). On ads, 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

Sidewall is free to download; Triathlon costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Triathlon ships an update every 8 months, Sidewall every 5 days. The most recent releases landed on October 26, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 3 level
Triathlon versus Sidewall: the parameters behind the verdict, then further details
ParameterTriathlonSidewall
Price$0.99Free — better
Update frequencyEvery 8 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad — betteriPhone
Requires iOS26.018.0 — better
Further details — not scored
Size6 MB2 MB
Age rating4+4+
DeveloperFrank KalhojTim Heuer

In-app purchases

None

Triathlon

No in-app purchases

None

Sidewall

No in-app purchases

Questions

Is Triathlon free?
Triathlon costs $0.99, with no in-app purchases.
Is Sidewall free?
Sidewall is free to download, with no in-app purchases.
Do Triathlon or Sidewall have ads?
Neither Triathlon nor Sidewall shows ads.
Which is updated more often, Triathlon or Sidewall?
Triathlon ships an update every 8 months, and Sidewall every 5 days. Most recently, Triathlon was updated on October 26, 2026 and Sidewall on October 7, 2026.

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