Comparison

RSL vs Avoided CO2e

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

Head to head
About

RSL

This application provides a pressure-temperature calculator and retrofit procedures specifically for the RS series of refrigerants. It also offers detailed information about these refrigerant products.

Highlights
  • Pressure Temperature Calculator
  • Retrofit Procedures
  • Refrigerant Information
  • RS Series Specific
Features
Read full description

RSL is pleased to offer an iPhone application for the RS series of refrigerant products. The app provides the following: Pressure Temperature Calculator for the RS series of refrigerants Retrofit procedures for the RS series of refrigerants Information about the RS series of refrigerants

About

Avoided CO2e

Features
Read full description

The CO2e App aims to raise awareness and enhance understanding of the contributions of the Montreal Protocol and its Kigali Amendment to climate change mitigation. The app allows users to obtain carbon dioxide equivalent (CO2e) amounts of ozone-depleting substances (ODSs) phased out and the expected phasedown of hydrofluorocarbons (HFCs), which are potent greenhouse gases. With the CO2e App, users have the ability to access global, regional, or party-specific CO2e reduction data for any group of substances controlled under the Montreal Protocol. The app provides flexibility in presenting this data, potentially offering various formats for users to visualize and analyze the information. The CO2e App provides accessible and comprehensive information about CO2e reductions, and hopes to inspire and inform users about the importance of phasing out ODSs and phasing down HFCs.

Screenshots

RSL4 screens
Avoided CO2e4 screens

Verdict

The call

RSL and Avoided CO2e are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on June 25, 2026 and February 26, 2026 respectively.

ScorecardNo meaningful differences
RSL versus Avoided CO2e: the parameters behind the verdict, then further details
ParameterRSLAvoided CO2e
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 4 monthsEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size13 MB28 MB
Age rating4+4+
DeveloperNick PooleUNEP

In-app purchases

None

RSL

No in-app purchases

None

Avoided CO2e

No in-app purchases

Questions

Is RSL free?
RSL is free to download, with no in-app purchases.
Is Avoided CO2e free?
Avoided CO2e is free to download, with no in-app purchases.
Do RSL or Avoided CO2e have ads?
Neither RSL nor Avoided CO2e shows ads.
Which is updated more often, RSL or Avoided CO2e?
RSL ships an update every 4 months, and Avoided CO2e every 4 months. Most recently, RSL was updated on June 25, 2026 and Avoided CO2e on February 26, 2026.

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