Comparison

Gretio vs Cold Bore

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

Head to head
About

Gretio

This app enables advanced vehicle diagnostics and service functions when paired with specific OBD-II hardware. It allows users to analyze extensive data points, look up trouble codes across various vehicle modules, and perform specialized maintenance tasks. Designed for DIY enthusiasts, it requires adherence to vehicle manufacturer guidelines.

Highlights
  • Advanced vehicle diagnostics
  • Analyze thousands of data points
  • Diagnostic trouble code lookup
  • Perform service functions (DPF regen, SCR tests)
  • Program vehicle features
  • Supports diesel, gas, electric, hybrid vehicles
Features
Read full description

Use Gretio with an OBDLINK MX+ to perform advanced diagnostic functions on your diesel, gas, electric, or hybrid vehicle. Analyze thousands of different data points at high speeds. Look up diagnostic trouble codes for all modules including the Engine Control Module, Chassis Control Module, Drive Motor Control Modules, Battery Energy Control modules, Body Control Module, Radio, and many more. Perform advanced service functions such as diesel particulate filter service regenerations, selective catalytic reduction tests, power relay tests, and even program some features. Gretio is an advanced tool made for the DIY market. All procedures must be used in accordance with the vehicle's service manual or other approved literature by your vehicle manufacturer. Gretio only functions on certain makes and models. Visit our website at https://gretioapp.com/ to see a list of known supported vehicles.

About

Cold Bore

This app helps precision shooters log performance, manage gear, and make informed decisions. It offers session logging, cold-bore tracking, ballistic tools, and maintenance records in a streamlined workflow.

Highlights
  • Session logging with weather and notes
  • Cold-bore impact tracking
  • Rifle and ammo management
  • Ballistic estimates
  • DOPE management
  • Maintenance records
  • Shot timer and audio counter
Features
Read full description

Cold Bore helps precision shooters track performance, organize gear, and make faster data-driven decisions at the range or in the field. Built for real-world use, Cold Bore combines session logging, cold-bore tracking, ballistic tools, DOPE management, and maintenance tracking in one workflow. Use Cold Bore to: • Log training sessions with weather, location, shots, and notes • Track true cold-bore impacts and identify drift over time • Manage rifles, ammo lots, round counts, and maintenance records • Use built-in Shot Timer and Audio Counter tools for drills and shot tracking • Build ballistic estimates and validate them with real-world results • Store and review Working DOPE and quick-reference shooting data • Back up and restore data with cloud or manual export options Whether you're confirming zero, preparing for a match, hunting, or tracking long-range performance, Cold Bore keeps your shooting data organized, accessible, and actionable. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Gretio4 screens
Cold Bore4 screens

Verdict

The call

The clearest difference is rating: Gretio at 3.8 against Cold Bore's 3.0. Gretio also leads on ratings volume (23 vs 2) and update cadence (fortnightly vs monthly). Cold Bore's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and monetization model 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. Gretio sells 4 in-app purchases, starting at $19.99 per year and Cold Bore sells 1 in-app purchase, starting at $24.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Gretio holds the better App Store score, 3.8 against 3.0. That said, the two scores are not equally well evidenced: Gretio has 23 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Gretio ships an update fortnightly, Cold Bore monthly. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
Gretio versus Cold Bore: the parameters behind the verdict, then further details
ParameterGretioCold Bore
PriceFreeFree
Rating3.8 (23 ratings) — better3.0 (2 ratings)
Positive reviews68.4% of reviews—
Number of ratings23 — better2
Update frequencyFortnightly — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size47 MB46 MB
Age rating4+4+
DeveloperSurreal Development LLCMichael Remington

Customer experience

Gretio

All ratings23 ratings
Positive69.6%
Neutral0.0%
Negative30.4%
Written reviews19 reviews
Positive68.4%
Neutral5.3%
Negative26.3%

Cold Bore

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Gretio

Subscriptions1
  • Gretio All Access$19.991 Year
One-time3
  • Gretio RPO Pack 1$34.99
  • Gretio RPO Pack 2$34.99
  • RPO Pack 3$34.99
1 purchases

Cold Bore

Subscriptions1
  • Cold Bore Pro Yearly1 Month trial$24.991 Year

Questions

Is Gretio free?
Gretio is free to download, with in-app purchases available.
Is Cold Bore free?
Cold Bore is free to download, with in-app purchases available.
Which has better reviews, Gretio or Cold Bore?
Gretio is rated higher. Gretio averages 3.8 out of 5 from 23 ratings, while Cold Bore averages 3.0 from 2 ratings.
Do Gretio or Cold Bore have ads?
Neither Gretio nor Cold Bore shows ads.
Which is updated more often, Gretio or Cold Bore?
Gretio ships an update fortnightly, and Cold Bore monthly. Most recently, Gretio was updated on November 11, 2026 and Cold Bore on November 5, 2026.

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