RSL vs Avoided CO2e
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Pressure Temperature Calculator
- Retrofit Procedures
- Refrigerant Information
- RS Series Specific
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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
Avoided CO2e
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on June 25, 2026 and February 26, 2026 respectively.
| Parameter | RSL | Avoided CO2e |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 13 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Nick Poole | UNEP |
In-app purchases
RSL
No in-app purchases
Avoided CO2e
No in-app purchases




