CarCharts

CarCharts is a simple & powerful app to compare car models visually.

Compare any number of cars simultaneously.
Specification database contains more than a 1 000 models with more than 10 000 bodystyle/engine variations. The database includes the majority of car models sold in Europe in recent years.
More than 25 comparison parameters.
Support metric, UK or US unit systems.
App works offline, no internet connection required.
Use iPhone for adhoc comparisons and iPad for large comparisons with tons of models.
View specs and photos.

Performance

Search: 445 objects, all in memory
When groups are used both for non-filtered list and for fitlered one first letter 2 / 20 (sometimes 10 / 100) next letters .2 / 2 (only if consequent search is used)
Without grouping - almost the same, so indexation takes almost no time.
Modification Loading (after RM update)
- 42 / 335 ms - plist hash loading
- 19 / 160 ms - plist array loading
- 00 / x ms - json loading
- 00 / x ms - json loading
- 47 / x ms - json array loading
- 53 / 460 ms - Modification instantiation
- 12 / 115 ms - Modification instantiation without key parsing
- 07 / 70 ms - indexing
- 55 / 450 ms - load all
- 02 / x ms - load metadata
App Initialization — 10ms : 50ms (Core Data : plist)

Object Model

Mods are stored in the CoreData database. Everything else is in plist files which are loaded into memory at runtime.

Mod - RO, 2500 objects, many fields
Model - RO, 250 objects, few fields
Brand - RO, 50 objects, few fields
Parameter - RO, 20 objects, few fields
ModSet - RW, 0-20 objects, 2 fields, one 0-3kb clob
Comparison - VT, 1 object at time, lots of subobjects

Conclusion

Mods should be stored in the r/o database, because it's too time consuming to load them all at once and storing them all in memory is a bit too much.
ModSets should be stored in the r/w database.
Everything else can be loaded from code / data files.

Colors

214 27 38 - segment control border (one of)
214 18 76 : 213 24 71 - segment control default top
213 28 69 - segment control default bottom
213 28 75 : 214 45 65 - segment control selected top
215 53 60 - segment control selected bottom
215 41 61 - segment control border top half (act. light gradient)
215 68 49 - segment control border bottom half
220 49 90 - Done button top top
220 75 88 - Done button top bottom
220 85 87 - Done button bottom
220 74 56 - Done button border
201 05 87 - gray top
206 08 80 - gray bottom
210 17 58 - gray border
240 00 78 - gray border 2 top
000 00 59 - gray border 2 bottom
000 00 45 : 000 00 15 - black segment button top
000 00 00 - black segment button botom
000 00 18 - black segment button border
000 00 56 : 000 00 24 - black segment button divider
218.42.91-219.80.85 - ios 6 Done button t-b / mid = 218.60.85
218.78.54-218.75.55 - ios 6 Done button border t-b
214.22.76-215.54.56 - ios 6 Back button t-b
214.27.45-213.50.36 - ios 6 Back button border t-b
212.16.80-212.37.64 - ios 6 segment button t-b / mid 214.29.69
216.26.66-215.44.56 - ios 6 segment divider t-b
211.18.46-213.35.42 - ios 6 segment button border t-b

Tints

brown hsb(30, 100, 15)
gray hsb(0, 0, 20)
blue hsb(210, 100, 25)

Graphics

Convert SVG icon

  rake icon_from_svg file=ico-chart size=60
  convert -background transparent ico-bar.svg -resize 60x60 ico-bar.png
  convert ico-bar.png -background white -flatten ico-bar-2.png

Fonts

  convert -list font | grep Font:

Long Model Names

Dodge RAM - 51 Mitsubishi Lancer Ralliart – 50 Audi A6 allroad quattro - 48 MB GLK - 47

Icon Sources

icon8 — require to mention them on the AppStore page. pixeden — no atribution cupertinoline — no atribution

my tab-chart open tab-star open cell-google pixeden tab-checkbox pixeden tab-car pixeden tab-filter icon8 tab-funnel icon8 bar-filter misc bar-expand cupertinoline bar-gear

Logo Font

ITC Blair Medium 14pt (small-caps, commersial) Orbitron Medium 17pt (geometric, open-source)

Internationalization

US
 MPG gal lbs ft3 in
 Displacement: L & cu. in.
 Trunk volume
 Track Width / Tread / Front Track / Rear Track
 jaguar.uk Front Track Rear Track
 4WD 2WD
 Fuel System: some kind of injection

  torque Ft. Lbs
  Lb-Ft lb.ft
  cargo colume cargo cu.ft
  fuel gal

  3.6-Liter V6 24-Valve VVT Engine

UK mpg mph | kg litre mm kW HP Nm | lb-ft bhp
  Everybody uses MPG and MPH
  PS is used a lot
  toyota and other don't use in, lb, gal at all

 CO2 — g/km
 38.7 mpg (combined)
 litre, kg
 0-62 mph/s
 max speed mph
 fuel type: pertol diesel
 KW PS Nm @ rpm
 size: mm
 torque lb-ft @ rpm

 fuel: litre / UK gallons
 suzuki repeats all in inches and pounds
 landrover.co.uk: litre HP Nm cc mph 117  0-60mph, CO2 162 g/km,  40.4 mpg (urban combined), 4,555mm, 2,200kg


cc to cu. in. 16.387
mm to inch 25.4
Nm to lb-ft 0.74


Number of Cylinders / No. of Cylinders
Number of Valves
Max Power
Max Torques
Overall length
Max Speed

10 get the initial files manually
  generations.html: <audi-a4-2011> <ford-focus-2014> <bmw-3-2014>, ...
11 parse to URLs
  generation-bodies-first.yaml: audi-a4-2011: /audi/a3/123456/specs, ...
12 load initial bodytype
  generations/mark-model-year.html ...
13 parse initial bodytype for other bodytypes
  generation-bodies-other.yaml: audi-a4-2011-hatch3d: /audi/a3/123456/456789/specs, ...
14 load other bodytypes
  generations/mark-model-year-bodytype.html ...
20 parse bodytypes (both) for mod URLs
  mods.yaml: bmw-3-2014-sedan--1.8T-200ps-AT-FWD => /bmw/1/123456/456789/654987 (or name file like bmw-3-6123456-6789654)
30 load mods
  mods/*.html
40 parse mods

Competition

CarBase — 1$ https://www.appannie.com/apps/ios/app/898424389/ CarCompare — free Automobile Specs - Murat Tanriover - 1$ Ojuu — html shit

mitya / car-charts