Oilmanac is a maintenance manager and service log for all your machines with small engines. It keeps all your maintenance data in one convenient place - on your iPhone, iPad, or both. No need to dig out the user manual and page through it every year to perform routine maintenance on your machine. Pull up the machine in Oilmanac, and all the information you need to perform the maintenance is immediately available. Once the maintenance is completed, you can easily record all the services you performed in the Service Log tab.

Enter your model specifications and maintenance recommendations for each machine from your user manual, or download them from the user database if available. A wide variety of machine types are available: lawn mowers, leaf blowers, yard vacuums, weed trimmers, tillers, power washers, water pumps, augers, chainsaws, generators, snow blowers, outboard motors, personal water craft, all terrain vehicles, and snowmobiles. Available services are tailored to the specific machine, including oil and oil filter change, spark plug change, air filter clean and change, transmission/gear oil change for drivable machines, grease, and others.

Additional features:
∙ Automatically download model specifications and maintenance recommendations from the user database
∙ Complete service record for all your machines
∙ Create shopping lists for material needed for service: oil, filters, spark plugs and more
∙ Set reminders when service is due for each machine, or schedule annually
∙ iCloud sync: all your machine data is stored securely in your iCloud account, and is available on all your iOS and macOS devices logged into iCloud - iPhone and iPad, and now your Macs with Oilmanac for macOS. (Requires iCloud Drive. Oilmanac for macOS available as separate purchase on the Mac App Store.)

What’s New

Version 1.2

• New machine types added - Hedge Trimmer, Lawn Edger, Log Splitter, Wood Chipper
• New usage log - easily log and track engine hours for machines without built-in meters
• Brand alone is now allowed for preferred oil product
• User interface improvements
• Bug fixes

Ratings and Reviews

3.6 out of 5
15 Ratings

15 Ratings

haugens43 ,

Good app. Needs a few things

Just got the app and I really like it for the most part. There is a lot of good thought into maintenance intervals and storing part numbers.

This has been mentioned but I will also say it. We need a way to manually add some categories. I own some classic tractors a bobcat and multiple trailers that I would like to track on this. I looked in the + to add and I only see fixed categories. I don’t see where my Bobcat or a tractor fits in. I can put it under mowers but that’s not what they are.

Like I said. Good app just as some customization for some of us who live outside the norm.

Yardracer ,

Great App, Could use additional flexibility

I just downloaded this app, and my first impression is that it is very well laid out, and easy to use. I really like the ability to input serial #’s and purchase dates. As a person with a lot of equipment for a homeowner, being able to track the work I have done to maintain it all in one place is great. The basic interface makes it quick and easy to log information directly into my iPad.
My first issue is that I have two mowers that aren’t listed; a Cub Cadet ProZ 100S EFI, and a John Deere LT150. I also have a Husqvarna 350 chainsaw that isn’t listed, and a Troy-Bilt tiller. Three of these were big-box purchases, and the fourth is a pretty common commercial mower. I mean, you’ve got Yazoos on the list....
My second request would be for the ability to enter generic equipment with readily available small engines. For instance, I have a Cad-Digger with a Predator engine. I wouldn’t expect it to be worth the effort to add machines like this to an option list, but being able to create a custom machine description and attach the off-the-shelf engine to the equipment would be great. In addition to that, the ability to have a notes section for machine-specific parts (like the hydraulics of my digger) would allow me to log service information that relates only to this odd machine.
Last, I would love to see the ability to add small tractors to this app. I want to log all my maintenance in one place, and that includes a sub-compact Kubota tractor (BX series). If there were a way to integrate compact and sub-compact tractors into the list, it would be amazing. I do realize that this app is aimed at small engines, so compacts may be a stretch, but common sub-compacts like the BX and Deere 1000 series would be amazing. A lot of homeowners are buying these instead of lawn tractors these days.
In summary, I like the app a lot so far. Three stars because a handful of my small equipment isn’t available on the list currently. It would get four if it was all there, and five if it had the function to create custom equipment using common engines and maintenance features that are already in the app.

Developer Response ,

Not every model is currently available in the database. If you do not see your model after selecting the brand, you can add your model number by tapping the "+" button.

talley1347 ,

Not what I expected

The app seems like a great concept, but it’s very very limited. They give you a preset of like 12-15 small engines to choose from, and that’s it. You can’t enter in your own equipment, or call it what you want. I have hundreds of small engines and no where near half are listed. I would like to see user customization added to this app. Since we have to pay for it, it’s not worth the money for what it is. It would be alright if you had only a few items, but notepad in your phone would work just as well and it’s free. I wouldn’t recommend this app to anyone unless they add more features and allow the user more freedom with the app.

Developer Response ,

The functionality of the app and database are completely dependent on specific machine types. Available parts and services are derived from the machine type. For example, if you choose lawnmower, the app automatically adds lawnmower blade as a part and blade sharpening as a service. Without this specificity, the app would have no functionality beyond notepad or a spreadsheet. There are currently 16 machine types, as specifically listed in the app description. More machine types will be added in the future upon request, if they fit into the scope of the app. As stated in the description, the app is designed for machines with small engines, and support for some types of equipment, such as automobiles or large machinery, is currently not planned.

App Privacy

The developer, Starware Software LLC, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer's privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


Starware Software LLC
14.6 MB

Requires iOS 12.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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