Comparison

Fit Tolerance ISO vs Phynitty

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

Head to head
About

Fit Tolerance ISO

Calculates engineering tolerances for various mechanical components based on ISO and ANSI standards. It determines size limits, deviations, and fit types for holes and shafts, offering schematic representations of fits.

Highlights
  • Calculates engineering tolerances
  • Supports ISO and ANSI standards
  • Determines clearance, transition, and interference fits
  • Provides schematic fit representations
  • Includes preferred tolerances and fits
  • Works with metric units
Features
Read full description

Limits, fits and tolerances calculator has been developed to calculate engineering tolerances of inner and outer features of journal bearings, linear bearings, thrust bearings, bushings, ball bearings, roller bearings, housings, cylinder bores, drilled holes, linear and precision shafts, pistons, etc. The calculator works in line with ISO 286-1 (2010), ISO 286-2 (2010) and ANSI B4.2 (1978) standards which are based on metric units. According to the input parameters of nominal size and hole/shaft tolerances, size limits and deviations for hole/shaft are calculated and fit type is selected among the clearance, transition and interference fits. The schematic representation of the fit is also drawn. The preferred tolerances and fits advised by ISO and ANSI standards can be found in the "Supplements" section.

About

Phynitty

Features
Read full description

The Phynitty App is designed to enhance the Phynitty systems for researchers, whether in the lab for telemetry or in the wild for biologging. It provides real-time data access, system management and setup, allowing users to customize and monitor experiments seamlessly. Key features include: • Remote Monitoring: Oversee experiments from anywhere at anytime. • Data Collection: Capture and store data efficiently. • Automated Analysis: Simplify complex data analysis processes. • Customizable Configurations: Tailor settings to fit specific study requirements. • Powerful Modes: Utilize customizable configuration, logger mode, and monitoring mode. These features are designed to enhance efficiency, accuracy, and flexibility for your research.

Screenshots

Fit Tolerance ISO4 screens
Phynitty3 screens

Verdict

The call

The clearest difference is ads: Phynitty at none against Fit Tolerance ISO's shown. Phynitty also leads on update cadence (weekly vs every 12 months). On price, in-app purchases, device support and iOS requirement 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

Fit Tolerance ISO ships an update every 12 months, Phynitty weekly. The most recent releases landed on October 12, 2026 and September 20, 2026 respectively.

Scorecard2 real differences · 7 level
Fit Tolerance ISO versus Phynitty: the parameters behind the verdict, then further details
ParameterFit Tolerance ISOPhynitty
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 12 monthsWeekly — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size51 MB43 MB
Age rating4+4+
DeveloperYasar Yucel YesilbagManitty

In-app purchases

None

Fit Tolerance ISO

No in-app purchases

None

Phynitty

No in-app purchases

Questions

Is Fit Tolerance ISO free?
Fit Tolerance ISO is free to download, with no in-app purchases.
Is Phynitty free?
Phynitty is free to download, with no in-app purchases.
Do Fit Tolerance ISO or Phynitty have ads?
Fit Tolerance ISO shows ads; Phynitty does not.
Which is updated more often, Fit Tolerance ISO or Phynitty?
Fit Tolerance ISO ships an update every 12 months, and Phynitty weekly. Most recently, Fit Tolerance ISO was updated on October 12, 2026 and Phynitty on September 20, 2026.

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