Real data. Sampled every 0.5s for 5 minutes each.
Both apps synced identical files simultaneously. SynciZen never exceeded 26.1% CPU. Insync spiked to 99.4% — nearly maxing out a full CPU core.
300 seconds · sampled every 2s · lower is better
300 seconds · sampled every 2s · lower is better
* macOS benchmark · SynciZen 4.6.3 (Balance profile) vs Insync v3.8.7 · MacBook Pro M3 Pro · 300-second active sync test · sampled every 0.5s · both apps performing identical file sync operations simultaneously.
No sync activity just both apps open in the background. Insync spiked to 42.2% CPU and averaged 3.99%. SynciZen averaged 0.30% and never crossed 13.3%.
* macOS idle benchmark · SynciZen 4.6.3 (Balance profile) vs Insync · MacBook Pro M3 Pro · 300 seconds · no sync activity · sampled every 0.5s.
During the 300-second test, Insync spawned 31 short-lived worker processes (~9 seconds each) on top of its 2 persistent processes. SynciZen completed the same work with its 2 permanent processes — no spawning, no overhead.
| Metric | SynciZen | Insync | Advantage |
|---|---|---|---|
| Avg CPU — Active Sync | 0.44% | 3.45% | |
| Peak CPU — Active Sync | 26.1% | 99.4% | |
| CPU Energy — Active (300s) | 1.08 CPU-sec | 8.46 CPU-sec | |
| Avg CPU — Idle | 0.30% | 3.99% | |
| Peak CPU — Idle | 13.3% | 42.2% | |
| CPU Energy — Idle (300s) | 0.72 CPU-sec | 9.59 CPU-sec | |
| Avg RAM — Active Sync | 168.3 MB | 210.5 MB | |
| Avg RAM — Idle | 159.7 MB | 161.5 MB | |
| CPU spikes above 20% | Never | Active: 2.5s · Idle: 1s | |
| Simultaneous processes | 2 | 3 (+ spawns workers) | — |
| Built with Rust | ✓ | ✗ | |
| Native macOS UI | ✓ | ✗ | |
| Multiple Google accounts | ✓ | ✓ | |
| Selective sync | ✓ | ✓ |
* macOS benchmark · SynciZen 4.6.3 (Balance profile) vs Insync · MacBook Pro M3 Pro · Feb 2026 · both tests: 300 seconds · sampled every 0.5s.
Both apps synced identical files simultaneously. SynciZen peaked at 12% CPU. Insync spiked to 104% — maxing out a full core, with 5.5 seconds above 20% and 4.5 seconds above 50%.
300 seconds · sampled every 2s · lower is better
300 seconds · sampled every 2s · lower is better
* Linux benchmark · SynciZen vs Insync · 300-second active sync test · sampled every 0.5s.
No sync activity both apps open in the background. SynciZen uses 48% less RAM (289 MB vs 555 MB). Both stay under 4% CPU when idle.
* Linux idle benchmark · SynciZen vs Insync · 300 seconds · no sync activity · sampled every 0.5s.
| Metric | SynciZen | Insync | Advantage |
|---|---|---|---|
| Avg CPU — Active Sync | 0.77% | 1.99% | |
| Peak CPU — Active Sync | 12% | 104% | |
| CPU Energy — Active (300s) | 2.30 CPU-sec | 5.96 CPU-sec | |
| Avg RAM — Active Sync | 296 MB | 557 MB | |
| Avg RAM — Idle | 289 MB | 555 MB | |
| CPU spikes above 20% | Never | 5.5 seconds | |
| Process count | 2 | 5+ (incl. QtWebEngine) | — |
* Linux benchmark · SynciZen vs Insync · Feb 2026 · Legion 5 · 300 seconds · sampled every 0.5s.
Both apps synced identical files simultaneously. SynciZen averaged just 0.65% CPU and peaked at 34%. Insync averaged 10.46% and spiked to 120% — staying above 20% for 7 seconds and above 50% for 6.5 seconds.
300 seconds · sampled every 2s · lower is better
300 seconds · sampled every 2s · lower is better
* Windows benchmark · SynciZen vs Insync · Windows 11 Pro · Intel Core i7-14650HX · 300-second active sync test · sampled every 0.5s · both apps performing identical file sync operations simultaneously.
No sync activity both apps open in the background. SynciZen averaged just 0.10% CPU and 18.9 MB RAM. Insync averaged 2.03% CPU and held onto 68.3 MB RAM — with periodic spikes up to 19%.
* Windows idle benchmark · SynciZen vs Insync · Windows 11 Pro · Intel Core i7-14650HX · 300 seconds · no sync activity · sampled every 0.5s.
| Metric | SynciZen | Insync | Advantage |
|---|---|---|---|
| Avg CPU — Active Sync | 0.65% | 10.46% | |
| Peak CPU — Active Sync | 34% | 120% | |
| CPU Energy — Active (300s) | 0.47 CPU-sec | 7.53 CPU-sec | |
| Time above 20% CPU (active) | 0.5 s | 7.0 s | |
| Time above 50% CPU (active) | 0 s | 6.5 s | |
| Avg RAM — Active Sync | 43.8 MB | 72.6 MB | |
| Avg CPU — Idle | 0.10% | 2.03% | |
| Peak CPU — Idle | 4% | 19% | |
| Avg RAM — Idle | 18.9 MB | 68.3 MB | |
| CPU spikes above 20% (idle) | 0 s | 0 s | — |
| Process count | 2 | 2 (incl. CEF) | — |
| Built with Rust | ✓ | ✗ | |
| Multiple Google accounts | ✓ | ✓ | |
| Selective sync | ✓ | ✓ |
* Windows benchmark · SynciZen vs Insync · Mar 2026 · Windows 11 Pro · Intel Core i7-14650HX · 300 seconds · sampled every 0.5s.
Real benchmarks · macOS, Linux & Windows · Mar 2026
SynciZen uses up to 16× less CPU during active sync on Windows and up to 20× less when idle. Your battery, CPU, and RAM will thank you on Mac, Linux, and Windows.
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