# Oilmanac vs Engine Service Log

The clearest difference is price: Engine Service Log at $1.99 against Oilmanac's $2.99. Engine Service Log also leads on iOS requirement (15.2 vs 18.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Oilmanac costs $2.99 and Engine Service Log $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Oilmanac ships an update every 3 months, Engine Service Log every 4 months. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Oilmanac | Engine Service Log |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[4.0 (27 ratings)](https://appshunter.io/ios/app/oilmanac/id1453337134/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 53.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Paid | — |
| Size | 10 MB | 1 MB |
| Requires iOS | 18.0 | **15.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Starware Software LLC](https://appshunter.io/developer/988250389) | [James C Hendryx](https://appshunter.io/developer/1485136050) |

## What reviewers say

### Oilmanac

[App page](https://appshunter.io/ios/app/oilmanac/id1453337134)

Manage maintenance and service logs for small engine machines. Access model specifications and recommendations, track completed services, and set reminders for upcoming maintenance. Syncs data across iOS and macOS devices via iCloud.

**Highlights:** Machine maintenance management, Service log tracking, Model specification database, Maintenance reminders, Shopping list creation, iCloud sync

**Features:** Vision Pro support

**In-app purchases:** none


### Engine Service Log

[App page](https://appshunter.io/ios/app/engine-service-log/id1602083172)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Oilmanac free?

Oilmanac costs $2.99, with no in-app purchases.

### Is Engine Service Log free?

Engine Service Log costs $1.99, with no in-app purchases.

### Do Oilmanac or Engine Service Log have ads?

Neither Oilmanac nor Engine Service Log shows ads.

### Which is updated more often, Oilmanac or Engine Service Log?

Oilmanac ships an update every 3 months, and Engine Service Log every 4 months. Most recently, Oilmanac was updated on October 24, 2026 and Engine Service Log on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*