Decision Workspace
relativedelta vs hron vs fasttime
Side-by-side comparison of Rust crates
38
relativedelta
growingv0.3.0
Rust implementation of relativedelta known from Python's dateutil library. Calculate dates by adding relative and offset values to a datetime instance. Currently the time and chrono crates are supported.
61
hron
experimentalv1.0.0
Human-readable cron — scheduling expressions that are a superset of what cron can express
54
fasttime
experimentalv0.2.3
Small UTC date/time library based on Ben Joffe's fast 64-bit date algorithm
Core Metrics
| relativedelta | hron | fasttime | |
|---|---|---|---|
| Health Score | 38 | 61 | 54 |
| Total Downloads | 9.3K | 939 | 371 |
| 30d Downloads | 69 | 546 | 38 |
| Dependents | 0 | 13 | 3 |
| Releases | 5 | 13 | 10 |
| Last Updated | 233d ago | 35d ago | 45d ago |
| Age | 5y 7m | 1m | 4m |
Health Breakdown
relativedelta
Maintenance
6
Quality
9
Community
3
Popularity
5
Documentation
15
hron
Maintenance
15
Quality
18
Community
9
Popularity
4
Documentation
15
fasttime
Maintenance
16
Quality
15
Community
7
Popularity
3
Documentation
13
Technical Details
| relativedelta | hron | fasttime | |
|---|---|---|---|
| Version | 0.3.0 | 1.0.0 | 0.2.3 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MPL-2.0+ | MIT | Apache-2.0 |
| Dependencies | 12 | 7 | 3 |
| Crate Size | 32KB | 48KB | 201KB |
| Features | 4 | 2 | 3 |
| Yanked % | 40.0% | 0.0% | 0.0% |
| Edition | 2024 | 2021 | 2021 |
| MSRV | 1.85.0 | 1.93 | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •hron leads with a health score of 61/100, but none of the options score above 80.
- •relativedelta has the most downloads (9.3K), suggesting wider adoption.
- •relativedelta, fasttime are pre-1.0 — API may change.