Flat Icons API
Fastest API integration, lowest cost on the market – by far.
Phosphor Icons
A flexible icon family for everyone — 588 icons in 6 weights
Updated July 2026
| Flat Icons API | Phosphor Icons | |
|---|---|---|
| Rating | 5.0★ | 5.0★ |
| Reviews | 1 | 15 |
| Pros | 0 | 7 |
| FactScore™ | 15.1 | 60.2 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Flat Icons API — Pros
No unique pros listedBoth tools — Pros
—Only in Phosphor Icons — Pros
Minimalist design Wide variety of icons Free and open source Multiple icon styles Easy to expand Excellent documentation High resolutionOnly in Flat Icons API — Cons
—Both tools — Cons
—Only in Phosphor Icons — Cons
—Details
| Flat Icons API | Phosphor Icons | |
|---|---|---|
| Categories | Design resources, Icon sets | Graphic design tools, Design resources, Icon sets |
| Platforms | Web | Web |
| Added | March 28, 2024 | October 13, 2020 |
| Website | flat-icons.com | phosphoricons.com |
Who Should Pick Which?
Choose Flat Icons API if...
- No unique pros listed
Choose Phosphor Icons if...
- Minimalist design
- Wide variety of icons
- Free and open source
With a FactScore™ of 15.1 vs 60.2, Phosphor Icons leads in community reception. Flat Icons API uniquely offers No unique pros listed, while Phosphor Icons stands out for Minimalist design and Wide variety of icons.
What Users Say
Flat Icons API
Flat Icons API is a game-changer for developers and designers alike. With access to over 52,000 premium assets, integrating sleek icons into your app or project has never been easier. The setup is ...
Phosphor Icons
We use this excellent icon set throughout our app on all our platforms. It's fun to work with, well documented, and it is offering all the icons we need (and growing!). It also features 5 different...
These icons are so stunning and beautifully designed, and incredibly flexible to boot! This is our second project to use them, and we found we could customise them to get a duotone effect that feel...
Beautiful, well-crafted icons with an array of different styles. The duotone icons are especially nice, and the whole set is easy to expand with custom icons. (We've added an octopus! 🐙)
Related Comparisons
Frequently Asked Questions
Which is better, Flat Icons API or Phosphor Icons?
Based on FactScore™, Phosphor Icons leads with a score of 60.2 vs 15.1. Phosphor Icons has a higher rating of 5.0★ compared to 5.0★.
What are the pros of Flat Icons API compared to Phosphor Icons?
Flat Icons API uniquely offers: No unique pros listed.
What are the pros of Phosphor Icons compared to Flat Icons API?
Phosphor Icons uniquely offers: Minimalist design, Wide variety of icons, Free and open source, Multiple icon styles, Easy to expand.
Is Flat Icons API better rated than Phosphor Icons?
Flat Icons API is rated 5.0★ from 1 reviews. Phosphor Icons is rated 5.0★ from 15 reviews.
What is the FactScore™ of Flat Icons API and Phosphor Icons?
FactScore™ weighs rating and review volume together. Flat Icons API scores 15.1 and Phosphor Icons scores 60.2.
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